EM65571AGH EMC [ELAN Microelectronics Corp], EM65571AGH Datasheet - Page 48

• Manufacturer Part Number: EM65571AGH
• Description: 130COM / 128SEG 65K Color STN LCD Driver
• Manufacturer: EMC [ELAN Microelectronics Corp]

EM65571
130COM/128SEG 65K Color STN LCD Driver
42 •
7.14
Gradation Palette
The EM65571 has two gradation display modes, the gradation fixed display mode and
the gradation variable display mode. Select either of the two modes using the
gradation display mode register.
PWM = “0”: Select the variable display mode using 32 gradations selected from 48
PWM = “1”: Select the fixed display mode using specific 32 gradations
To select the best gradation level suited for the LCD panel, use the gradation palette
register among the 48-level gradation palettes in the gradation variable display mode.
The segment driver output is set up by the selected 32-levels of gradation palettes.
The gradation palette register provides three registers for the SEGAi (0-127) group,
SEGBi (0-127) group, and SEGCi (0-127) group of segment driver outputs [palettes Aj,
Bj, and Cj (j = 0-31)]. Each register consists of a 6-bit register, selecting 32 gradations
from the pattern for 48 gradations.
gradations (65K=1, C256=0).
Select the variable display mode using 8 gradations selected from 48
gradations (65K=0, C256=1).
(65K=1, C256=0)
Select the variable display mode using 16 gradations selected from 48
gradations (65K=0, C256=0).
Select the fixed display mode using specific 16 gradations
(65K=0,C256=0)
(65K=0,C256=1)
Select the fixed display mode using specific 8 gradations
(This specification is subject to change without further notice)
Product Specification (V1.0) 08.04.2005